Fault Code 13 – Loss Communication To Rs485; Fault Code 14 – Loss Of Signal From Inverter Board; Fault Code 15 – Exit Water Temperature Sensor Fault - Carrier 30AWH004HB Service Manual

Fault code 13 – Loss communication to RS485
Are the connections correct
(See Wiring Diagrams)
Are all cables and connectors correctly
fitted
Fault code 14 – Loss of signal from inverter board
Are the connections of inverter board and
GMC board correct (See Wiring Diagrams)
Are all cables and connectors correctly
fitted
Fault code 15 – Exit water temperature sensor fault
Is the sensor correctly connected
(See Wiring Diagrams)
Are the resistance characteristics of the
temperature sensor normal *
Check GMC board - replace if defective
SM_30AW.indd 80
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
80
Diagnostic
Check and correct the connections
Check cabling
Check GMC Board - if defective,
replace
Check and correct the connections
Check cabling between inverter board
and GMC board
Check GMC Board - if defective,
replace
Check Inverter Board - if defective,
replace
Correctly connect the Sensor
Replace defective Sensor
*Check resistance table
6
30AW
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